Material Recommendations
Best
- Soft plastics
- HDPE
- LDPE
- foams.
- Dence Polystyrene
- Light weight polystyrene
- Expanded PVC
- Cork.
Noisy
- Hard plastics
- Acrylic
- Wood
- Plywood
- Pine
Avoid
- Solid PVC (Tends to clog bits)
- Leather (Fibrous. Cuts but clogs bits. Stinks.)